Astragalus zibaishanensis sp. nov. (Fabaceae), a new species from Shaanxi, China

By

Liu, Peiliang
Xun, Lu-Lu
Su, Chun
Lu, Yuan
Li, Bin
Yue, Ming

Type

Article

Date of Publication

2025-11-19

Original Publication

PhytoKeys

Volume

266

Pages

267--280

Subjects

Fabaceae , new species , Phylogeny , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.266.170977

 

Abstract

<br> Astragalus zibaishanensis<br> sp. nov.<br> (Fabaceae) is described and illustrated from Shaanxi, China. This new species is similar to<br> Astragalus monadelphus<br> ,<br> A. xitaibaicus<br> and<br> A. neomonodelphus<br> by having yellow petals, pseudomonadelphous androecium, and stipitate legumes, but can be distinguished by its stem 0.9–1.5 mm in diameter; leaflets 5–7, hairy adaxially and abaxially; calyx teeth triangular, ca. 0.5 mm long; standard 17–20 mm long; wings 18–21 mm long; keels 17–20 mm long; pistil glabrous; legume glabrous, with a stipe 10–11 mm long.<br> Astragalus zibaishanensis<br> is unique in<br> Astragalus<br> by having pseudomonadelphous androecium. Phylogenetic analyses confirm that the new species is a member of A. sect. Cenantrum. The nuclear ITS tree shows that<br> A. zibaishanensis<br> forms a clade with<br> A. henryi<br> ,<br> A. umbellatus<br> ,<br> A. chilienshanensis<br> ,<br> A. moellendorffii<br> ,<br> A. przewalskii<br> ,<br> A. monadelphus<br> ,<br> A. xitaibaicus<br> and<br> A. neomonodelphus<br> .<br>